API 6A MONOGRAMMED COMPONENTS MATERIAL CLASS INTERCHANGEABILITY

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raj susi

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Jul 21, 2020, 8:34:11 AM7/21/20
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Dear Experts,

Good day to you all!

I have a concern, where the material class of API 6A product scenario is as per below table,

Can I accept the if the Manufacturer gives a higher/lower class for Main/Sub level components against PO requirement?

I m very well aware that Client may say it must be as per PO requirements, and some clients may accept if they get a higher class product is given for the same price. But I d like to know what does API say about this?

Please explain what all can be done in this kind of situations.

Inline image

thanks and regards
raj

Prakash Hegde

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Jul 21, 2020, 9:05:55 AM7/21/20
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Hi 
e.g PS1 ,PSL2 PSL3  and its catagory 
If you require matl  as per PSL2  and mfgr gives you PSL3 it is acceptable but not vice versa

Regards

Hegde



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raj susi

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Jul 21, 2020, 9:17:29 AM7/21/20
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Dear Hegde,

I m not talking about PSL-1, 2, 3, 3G, 4 (product specification level) or PR-1, 2 (performance requirement).

Its only about Material Class.

regards
raj

Prakash Hegde

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Jul 21, 2020, 11:50:32 PM7/21/20
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Hl
Yes material mech properties e.g if you select ASTM 4130
YS OF 75ksi min
65ksi  is specified in API spec
Hardness restriction is same.for.all grade
Regards
Hegde

On Tue, 21 Jul 2020 at 18:55, 'raj susi' via Materials & Welding

Prakash Hegde

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Jul 21, 2020, 11:50:33 PM7/21/20
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Matl Chemistry  requirement.is.to be controlled.as.specified



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